Route reliability record
PHX→OKC
Phoenix to Oklahoma City
- Flights
- 1,860
- Period
- July 2025 to June 2026
- Distance
- 833 mi
- Carriers
- 4
This route lands a B+, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 1,860 PHX to OKC flights, of which SkyWest Airlines flew 843 at 76.8% on time.
Best time to fly PHX to OKC: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 97.2% of the time and Wednesday flights 80.9%, against 76.6% for the route overall.
The US average over the same twelve months is 77.6%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.6%
Arrivals under 15 minutes late, of 1,843 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
0.91%
National rate is 1.81%
Best carrier
SkyWest
76.8% on time across 843 flights
These figures cover 1,860 flights between July 2025 and June 2026. Beyond the headline rate, 8.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
Which airline is most reliable on PHX to OKC
The two carriers here are closely matched: 2 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Airthin sample | 1 | 100.0% | — | 0.00% | A+ |
| American Airlinesthin sample | 130 | 85.7% | 64 min | 3.08% | A− |
| SkyWest Airlines | 843 | 76.8% | 75 min | 0.59% | B+ |
| Southwest Airlines | 886 | 74.9% | 49 min | 0.90% | C+ |
No carrier stands out. SkyWest tops the table at 76.8%, 2 points clear of the bottom, which is inside the range this kind of sample moves year to year.
Flight by flight
Flights on PHX to OKC
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
Best ways to make this trip
The most reliable ways to fly Phoenix to Oklahoma City
Every airline on this route, ranked by how often a scheduled flight actually operated and arrived on time, with its best departure time and most punctual flight number. No nearby airport pair beat these.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. PHX → OKCPhoenix to Oklahoma City | SkyWest Airlines | 76.3% | 76.8% | 0.59% | 8am–11am, Wed | OO 6320 19:04 |
| 2. PHX → OKCPhoenix to Oklahoma City | Southwest Airlines | 74.2% | 74.9% | 0.90% | 5am–8am, Tue | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 37 points, against 2 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am36 flights97.2%
- 8am–11am624 flights86.1%
- 11am–2pm372 flights77.8%
- 2pm–5pm189 flights73.9%
- 5pm–8pm462 flights68.1%
- 8pm–5am177 flights60.7%
Scale runs 50% to 100%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 60.7% on time, against 97.2% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 624 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 14 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
September is the best month on the calendar at 83.7% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. July was the busiest month here, with 175 flights.
Across the week, Wednesday is the strongest day at 80.9% on time and Sunday the weakest at 71.3%. 10 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 26,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 45%Late-arriving aircraft
- 45%Carrier
- 6%National Airspace System
- 4%Extreme weather
- 0%Security
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 26,000 reported delay minutes here, that single category outweighs weather by 10 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 26,452 reported delay minutes.
The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 12,000 of the 26,000 delay minutes reported here.
Cancellations sit at 0.91% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here actually costs
8.1% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 833 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 80.0% on time across 1,859 flights, 3 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 3 points of difference.
The sample behind these figures is 1,860 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in OKC after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 83.7% on time and March 69.9%, a swing of 14 points. If the dates move at all, move them out of March before you think about anything else. 1,843 completed flights over 12 months sit behind that.
Common questions
PHX to OKC questions
How often is PHX to OKC delayed?
About one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 23.4% of the 1,860 flights in this analysis, against 22.4% nationally. Delayed flights are late by about an hour on average.
Which airline is most reliable on PHX to OKC?
SkyWest Airlines leads at 76.8% on time across 843 flights. Southwest Airlines is at the other end on 74.9%, a gap of 2 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on PHX to OKC?
The 5am–8am departure window is the strongest at 97.2% on time. The 8pm–5am window is the weakest at 60.7%, 37 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are March delays on PHX to OKC?
March is the weakest month at 69.9% on time, compared with 83.7% in September. Across the year that is 14 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- OKC to PHX — the return legseparate record
- Phoenix Sky Harbor International (PHX) delay statistics
- American Airlines on PHX to OKC85.7%
- SkyWest Airlines on PHX to OKC76.8%
- Southwest Airlines on PHX to OKC74.9%
- PHX to DEN, a related route77.2%
- DFW to OKC, a related route72.4%
- PHX to LAX, a related route82.8%
- Envoy Air on-time record100.0%
- American Airlines on-time record85.7%
- SkyWest Airlines on-time record76.8%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
Direction matters. PHX to OKC and OKC to PHX are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.